Retaining means for ratchet pins



e. c PARISH. RETAINING MEANS FOR RATCHET PINS.

APPLICATION FILED DEC. 3; I921.

Patented Dec. 12, 1922.

ATTORNEY eaAnai/r o. PARISH, or LA in narninn, NEW YORK.

RETAINING- MEANSVFOR RATCHET PINS.

Application filed December To all whom it may concern:

Be it known that l, GRAHAM C. PARISH, a citizen of the United States,residing at Lake Katrine, in the county of Ulster and State of New York,have invented certain new and useful Improvement in Retaining Means forRatchet Pins, of which the following is a specification, reference beinghad therein to the-accompanying which form a part thereof. My inventionrelates to retaining means for ratchet pins, and more particularly toadevice for use 1n connection with a hollow pulley secured to the shaftof an internal combustion engine. by means of a ratchet pin, said pulleybein used as a driving pulley for a tan belt for circulating air about aradiator through which the water used in cooling the engine, iscirculatedv combined pulley and ratchet mech anism withwhich myretaining means is adapted to be combined, i very extensively used in acertain well known type of automobile, the common practice being toproride a pulley having diametrically opposite openings through the facethereof to facilitate the mounting and removal ot'same,

the pin itself being retained within the pulley by means ot cotterpinspassing through opening in the pin and projecting beyond same so as toengage the inner wall of the pulley.

It the common experience in devices of the character immediately abovereferred to,, for the cotter-pins to wear and become arated from theratchet pin, thus permittinn' said ratchet 31 n toesca'oe throuph o l sopening: in the pulley and either become bent or broken in such a manneras to jam tl-e mechanism adjacent thereto, and break the driving belt orforce it from the pulley, or to break oil within the pulley;

fhe a pin projects beyond the pulley and is bent out of term, it isfrequently :essary to remove the entire radiator a se of the smallsoaceiabout this i 1 i ey. lhis small space between the pulley and theradiator also makes the use or".

tools about the ratchet venient and Cll'lllCUllZ, i

lVith the above conditionsin mlnd, I

pin both inconbave provided a retaii'ling means which, 7

drawings,

a, 1921. Serial 110419317.-

maybe quickly mounted in, and removed from, the pulley and in a relationto the ratchet pin which will avoid all possibility= ot the escape ofthe pin through the holes in the pulley, said means not being sub-' handin the contracted space between the d pulley and the radiator, thusleaving the other hand ree to control the ratchet pin while theretaining means is being positioned. No tools of any kind are re 1' edin mounting and removing the retainin means, and the positioningjot thismeans within the pulley will, under all conditions, be suiiicientlypermanent to avoid likelihood of its escape, and. thus .it affords apositive safeguard against the escape of the ratchet pin and thecomplete disabling of a carthereby.

Theinvention consists primarily, in retaining means forratchetpinsembodying therein the combination with a hollow pulley havinga hub adapted to fit the shart it an internal combustion engine adacentan opening therethrough, the .face of said pulley and said hub havingdiamet-i rically opposite alined openings,and a pin ad *ted topassthrough said openings and project between said hub and the innerwall otthe pulley face toconnect said. pulley with said shaft and formratchet teeth upon opposite sides of said hub, of aspiring memberadapted to be bent to semi-circular form to project across said openingsin the face of the pulley and have pivotal movement about an axissubstznitially 'c oncentrio with that of said pin to facilitate themountin g' and removal of the member'adjacent the inner wall 01' thepulleyg tace; and in. such other novel features of con struction; andcombination oi v parts as are. hereinafter set torth and described, andmore particularly pointed out in the claims hereto appended I 1Referring to the drawings,

' thereof.

adapted to be engaged by means embodying my invention shown combinedwith a hollow pulley and its associated ratchet pin;

Fig. 2 is a vertical ection therethrough with the shaft shown inelevation;

Fig. 3 is a perspective View of the semicircular retaining springremoved from the pulley;

Fig. 4; is a view of another invention; and

Figs. 5 and 6 illustrate fo of the ,hALl

still another form Like letters refer to like parts throughont theseveral views.

In the accompanying drawings, shown at a a hollow pulley of the usualcon-- struction having an overhung face I) and a hub -0 concentric withand within said face F1. The inner wall of the face 5 is substantiallyparallel with the cylin'c'lrical hub c, saic pulley a and its face 5being without flanges. The formation of the contact face of the'pulleyis immaterial to the present invention, since it may or may not havecrown, as desired.

The hub 0 is adapted to have a loose sliding fit upon the crank shaft (Zof an internal combustion engine, which shaft has a transverse opening 6thereth'rough adapted to recelve apm 7'.

The pi' lley face Z) and its hub 0 have diametrically opposite alinedopenin 's there-- through of a'diameter to permit the pin f to be passedfreely therethrough and passed through the opening" 6 of said shaft,said pin being'of a length to pass through said shaft andsaid hub" andproject into the space between the hub and the pulley face Z) so as toconnect said pulley with said shaftand form ratchet teethupon oppositesides of said. hub the ordinary clutch member of an internal combustionengine starting crank.

The open end of the pulley while in use is presented toward. andpositioned closely adjacent, the radiator of an automobile, which hasled to the difiiculty of etlecting repairs in the event of the breakageof the pin or of its projection through one of the openings in thepulley face I) so that by impact with other parts about the engine, it

becomes bent or ammed so that it may be removed only by means ofmachmery or tools.

relation of the pin f To secure the desired permanency in the with thepulley, while at the same time permitting: the expeditious removal of abroken pin and the substitution of new one therefor, 1 provide aflexible spring member 9 adapted to be readily brought to asemi-circular form, this memfiber being of a length, so that when it isbrought tothis form, it will project across the diametrically oppositeopenings in the pulley face 7) and engage the ends of the pin thebreakage of the l we the spring training me nsis so constructed of thespring member Wlll have a permanent 1 spring wire strip,

ing against substantially diametrically opposite points either upon theinner wall of the pulley face I) or upon the pin f so as to permit thespring,'when it has been fieXed and formed, to have pivotal movementsubstantially concentrically with the axis of the pin f. This greatly,facilitates the mounting of said spring member. within said pulley andits removal therefrom in the event of i It is unnecessary to provide forthe removal of the pin in the event of its escaping through an openingin face, since this cannot occur when said pulley member 9 is used.

While the flexibility of the spring member g willtend to hold'it firmlyin place, the rethat the ends relation to the ends of the pin f, thuspreventing" circumferential creepage of the spring member so as toexpose one of the openings in the pulley face. This character istic ofthe invention may be secured either by a detachable connection betweenthe spring meinber g and the pulley face 6 through the mediums of theopenings therethrough. or by means of a detachable connection betweensaid spring member and the ends of the ratchet pin 7. I

For convenience in mounting the spring member 9 in, and removing itfrom, the pulley. 1 prefer to employ the former expedient, suchconstruction being shown in Figs. 1 to of the drawings. In this form ofthe invention, I provide the springmember g, which is strip of flatwire, adjacent each end thereof with rivet 1 3., the upset portion 7:.of which is of relatively smaller diameter than the openings in thepulley face 6, and the head of which is rounded shown in Figs. 2 and 3,to give a large surface for the pin 7.

The ends of the member {7' are bent sl ghtly at an angle as shown inFig. 3, at i, to facilitate the engagement of either end of said memberwi. 1 the inner wall of the pulley, and minimize any tendency of the endof the member to bite against said wall during its pivotal movement.

Referring to Fig. 4a of the drawings, the construction is as heretoforedescribed, except that instead of using flat spring wire in producingthe member 9, I use a round and instead of securing said member to thepulley a through the medium of the openings through the face 6 thereof,I provide the pin f with transverse openings f adiarent opposite endsthereof adapted to recelve the ends of the member 9. In thls form of theinvention, no wear surfaces are required, slnce the distance between 1,aeasas the openings will center the pin 7 in relation to the shaft (Z,any thrust of said pin radially of said shaft beingagainst the tensionof said spring. member. -One end of said spring member isturned'slightly as shown at 72 to facilltate the engagement of that endof the spring with. an opening Referring to Figs. 5 provided with.grooves 7' site ends thereof adapted ted end 9 ofv a Spring and 6, thepin is member 9 correspending in other respects with the form of springmember shown in Figs. 1. to 3. This form of the invention has exactlythe same operative effect as that shown in Fig.4, as to the centering ofthe pin, and the absence of -merely necessary to pass the hand betweenthe pulley a and the radiator, and pull the spring member 9 outwardly ofsaid pulley, the ends of said member. having pivotal movement about anaxis substantially concentric with that of the pin f. This may be doneirrespective of the position of the pulley at the time, which a matterof considerable importance, since it is not always possible to stop theengine with the axis of said pin in a vertical position.

hen the spring has thus been turned, one end thereof may be flexed so asto disengage the upset end it of the rivet 72. from the opening in thepulley face I) in which it is seated, thus permitting a com pleteremoval of said member 9 from the pulley, and uncovering both openingsthrough the pulley face 6. 'The pin may then be allowed to drop, or bemoved, through the opening.

A new, or the same, spring member 9 is then used, the upset end it ofone of the ings of. the face Z) upon the inside of the pulley, and a pin7 dropped or passed through the alined openings in the pulley face 5,hub c and shaft (Z, until is rests upon the head of said rivet,whereupon the spring member 9 is flexed or brought to semi-circularform, and the free end thereofpassed within the pulley until the upsetend h of the rivet enters the diametrically opposite opening." in thepulley-face 7), whereupon said spring member is given a pivotal movementto bring it in its entirety within said pulley.

When so positioned, the flexibility inherent to said memberg will holdit firmly in place, the upset ends it" of the rivets upon opposite endsthereof preventing any ciradjacent the oppo w to receivetheslotpivotally face. as

Y stitution of a cuinferential movement, or creepage, of said member;l/Vhen the spring member 9 is thus formed, it will have a-length ofslightlyniore than 180 .in arc, and will project across both openings,the bent ends i preventing these ends biting into the. inner wall oft-hepulley face 6.

By having the upset ends it of smaller diameter than theopenings withwhich they co-operate, thelmember g be used with pulleys ofslightlydifferent diameters, and greater facility is afi'orded in the handlingof the retaining member. i y Y The pul ey a being" free fromany internalobstructions, it will be readily understood that the member, 9 may bereadily mounted in, andremovedt'from, the pulley structure, and will beretained in flexibilityinherent thereto. e i v H "In the form of theinvention shown in F 1g. 4, the same procedure is followed as referredto above in connection with [the form of the invention shown in Figs. 1to 3-, with the exception that the turned end of the member g will beinserted in one of the openingsf before said member is given-itssemi-circular form, thepin f being allowed to move to the full extentpermitted by the place solely by the member 9, before the opposite endof said member is passed through the opening f in the other end of saidp n, lVhen both ends of the member 5 have thus been as sembledin thepulley structure, said member receives 1 votal movement, the p n 7.

turning therewith. p H

Referring now to the form of the invention shown in F 5 and 6, theoperation is the same as that described in connection with Fig. 41-.with the exception that instead of.

passing the ends of a round wire through openings in the pin 7 theforked ends 5 of the flat wire member 9 are fitted tothe slottedportions j of said pin 7", the frictional engagement of said ends withsaid pin caus-- ing the pin to turn with said member when impartingpivotal movement thereto to bring i t within the pulley. rivets it beinginserted in one of vthe open- In the forms of the invention shown inFigs. 4i to 6, the member 9 is not permitted a reflex action sui'iciontto engagethe ends thereof with "the inner wailof the pulley in the formof the invention'shown in Figs; 1 to 3, the tension of" said springbeing relied upon tocenter the pin 7 and hold the ends thereof ings inthe pulleyjfa'ce 7;. r

, In all forms of the invention, the member a replacement of the pinvent its being readily started by a mere subplished. in a very shorttime,

away from the open pin, which may be aocomthe pulley an 7 of tools,

, and pro a spring member adapted The essential characteristic of myinvenbined with, a pulley structure of the type herein referred to, inreplacing a broken pin f, said member engaging the ends of said pin inmanner to prevent thereof radially of the shaft (Z, and being capable ofbeing readily and removed from, its operative relation to l to said pinwithout the use The member g may be readily used in conwith any pulleyof the type herein it being the practlce to sell said memshow. q

her 9 with a pin 7 separate andapart from so that an automobilist maycarry the pulley and spring members a reserve supply of pins in atoolbox, in order to be, equipped to quickly remove a broken pinfrom thepulley and replace it with a new one, which may be done even by anunskilled. driver. y

it is not my intention to limit the invention to the precise details ofcontruction shown in the accompanying drawings, it beapparent that suchmay be varied with out departing from the spirit and scope of theinvention. l r

- Having described the invention, what I claim as new and desire to haveprotected by Letters Patent, is,

1 Retaining means for ratchet pins embodying therein the combinationwith hollow pulley having a hub adapted to fit the shaft of an internalcombustion engine adj aeent an opening therethrough, the-face of saidpulley and metrically opposite alined openings, and a pin adapted topass through said openings and project between said hub and the innerwall of the pulley face to connect said pulley with said shaft and formratchet teeth upon hub, of a sprin member adapted to be bent tosemi-circular form to project across said openings in the face of thepulley and have pivotal movement opposite sides of said about an axissubstantially concentric with that of said pin to facilitate themounting and removal of the member adjacent the inner wall of the pulleyface.

, rung means for ratchet pins enibodyi therein the combination with ahollow pulley having a hub adapted to fit the shaft of an nte'r'nalcombustion eng ne ad acent an opening therethrough, the face of saidpulley and said hub having diametrically opposite alined openings, and apin adapted to pass through said openings 'ect betweensaid hub and theinner wall of the pulley face to connect said pulley with said shaft andform ratchet teeth upon opposite sides of said hub, of to be bent tosemi-circular form to project across said openings in the face of thepulley, and propulley face, whereby axis substantially concentric withthat displacement mounted within, I

said hub having dia-' of the rivet head jeetion's, adjacent the.opposite ends of said spring member adapted to enter-the diametrieally,pp"o'site openings through the said member is permitted tohaye,pivotalmovement about i of said pinto facilitate the mountingandre- ,moval of the member adjaeentfthe inner wall of t he pulley face.

3. Retaining, means body ng therein the comblnation 'wlth va hollowpulley;havingv a hub adapted to fit the shaft of an internal combustionengine adjacent an opening tlierethrough, the face 'of sa d pulley andopposite sides of said hub, of ajspring memfor ratchet pins emsaid hub;haying di a-l metr cally opposite alined openings, and a' ber adaptedto be bent to semi-circularform to project across said openings in theface of the pulley, and headed rivets carried adjacentthe opposite endsof said spring member andhavmg, the upset portionsthereof project fromone side thereof so as to be 'adaptedto enter the dlametrically oppositeopenings through thepulley face, whereby said member is permitted tohave pivotal movement about an ax s substantially con-' centric withthat of said spin to facilitate hem u i ns adr m val f t me isi en the iner Wa f the pu l y face, and said member will be relieved of wear a jcent said open ng by he in rpo on between same and the end of the pin. l4. Retaining means for ratchet pins embodying therein the combinationwith a hollow pulley having a hub adapted to it the shaft of an internalcombustion engine acent an opening therethrough, the face of said pulleyand said hub havingdia metrically opposite alined openings, and a pinadapted to; pass threugh said openings and aroject. between said hub andthe inner wall of the pulley face ,to connect said pulley with saidshaft and form ratchet teeth upon opposite sides of said hub, of a beradapted to bebent to semi-circular form to project across said openingsin the face of Pull y, a adjacentthelopposite ends of said spring memberand having the upset portions thereso as to of project from one sidethereof be adapted to enter the diametrically opposite openings throughthe pulley face, wherebysaid member is permitted to have pivotalmoyement about an'laxis substa spring memheaded rivets carried tiallyconcentric with that of said pin to" facilitate the mounting and removal'of the member adjacent the inner wall of the pulley face, and saidmember willbe relieved of wear an 3 ,161,112 openings by the interit?position of the rivet heads between same and the end of the pin, theupset ends. of said rivets being of smaller diameter than said openingsto adapt said member to pulleys of varying diameters, and the ends ofsaid member being bent at an angle from other portions thereof.

5. Retaining means for ratchet pins adapted for use in a pulley of thecharacter herein described, consisting of a flat spring metal stripadapted to be bent to semi-circular form, and a headed rivet passingtherethrough adjacent each end thereof, the upset portions of saidrivets projecting beyond the surface thereof.

In Witness whereof I have hereunto affixed, my signature, in thepresence of two subscribing Witnesses, this 22d, day of Nov. 1921.

GRAHAM o. PARISH.

Witnesses:

'NORVIN R. L sHN, SARA A. J OHNSON.

